(19)

(11)

EP 2 265 647 A2

(12)

(88) Date of publication A3: 07.01.2010 (43) Date of publication: 29.12.2010 Bulletin 2010/52 (21) Application number: 09728867.4 (22) Date of filing: 31.03.2009

(51) International Patent Classification (IPC):  C08F 2/00(2006.01) (86) International application number: PCT/US2009/001979 (87) International publication number: WO 2009/123699 (08.10.2009 Gazette 2009/41)

(84) Designated Contracting States: AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR Designated Extension States: AL BA RS (30) Priority: 31.03.2008 US 72511 P (71) Applicant: Rhodia Opérations 93306 Aubervilliers (FR)	(72) Inventors: CHEN, Zhiyun Jersey City, NJ 07310 (US) CASTAING, Jean-christophe Burlington, NJ 08016 (US) LABEAU, Marie-pierre Burlington, NJ 08016 (US) LIZARRAGA, Gilda Chesterfield, NJ 08515 (US) (74) Representative: Russell, Lindsey  Elkington and Fife LLP Thavies Inn House 3-4 Holborn Circus London EC1N 2HA London EC1N 2HA (GB)